Telephone attachment.



G. A. DURYEB.

TELEPHONE ATTACHMENT.

APPLICATION FILED MAY 13, 1908.

Patented Sept. 5, 1911.

INVENTO/i Fig; 2

WITNELSSES:

UNITED STATES PATENT OFFICE.

TELEPHONE ATTACHMENT.

Specification of Letters Patent.

Patented Sept. 5, 1911.

Application filed May 13, 1908. Serial No. 432,584.

To all whom it may concern:

Be it known that I, GUs'rAvUs A. DURYEE, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Telephone Attachments, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to telephones, and one of the objects thereof is to provide improved means for permitting conversation over a telephone without the same being audible to persons near the speaker.

Another object is to provide a device adapted to be mounted upon a telephone which will conduct the sounds from the speaker directly to the transmitter of the telephone.

A further object is to provide improved means whereby a device capable of attaining the above ends may be readily mounted upon or removed from a telephone.

Other objects will be in part obvious and in part pointed out hereinafter.

The invention accordingly consists in the features of construction, combinations of elements and arrangement of parts which will be exemplified in the construction hereinafter set forth, and the scope of the application of which will be indicated in the following claims.

In the accompanying drawing, wherein is illustrated one of the various possible embodiments of my invention, Figure 1 is a View in section showing the device positioned upon a telephone. Fig. 2 is a front elevation thereof. Fig. 3 is a rear elevation of the same, showing the means for connecting the device with the telephone. Fig. 4 is a view showing the construction of a portion of the means employed for holding the device upon the telephone. Fig. 5 is a side elevation of the mechanism shown in Fig. 4.

Similar reference characters refer to similar parts in the several views of the drawing.

Referring now to the drawing, wherein my improved device is shown adapted for use on a desk-telephone, 1 indicates a casing which is formed substantially funnel shaped, as shown, said casing being constituted by outer and inner walls 2 and 3 respectively, between which is provlded a sound deadening space 4. A transverse partition 5, in the present instance, is arranged intermediate the ends of the casing, the partition being provided with an a erture 6 in which slides a tubular member the outer end of which terminates near the forward end of the casing, and is provided with a mouth piece 8. Shoulders, as at 10 and 11, are provided upon tubular member 7 and are adapted to limit the sliding movement thereof in either direction. The tubular member is held against rotation relative to the casing by means of a pair of guide rods, one of which is shown at 12, said guide rods extending from opposite sides of shoulder 10 through apertures, one of which is shown at 13 in partition 5. Springs such as shown at 14 are extended between partition 5 and the free ends of these guide rods, the function of which is to urge the tubular member to movement in an outward direction, in which position shoulder 11 engages the partition, such engagement determining the position normally assumed by the mouth plece.

Mouth piece 8 is preferably formed to fit aboutthe lips of the speaker, and forms a sound proof closure about the speakers mouth, and the outer end of casing 1 is also formed to fit about the face of the speaker and similarly forms a sound proof closure thereabout. Suitable cushioning means, as shown at 15, is attached to the edge of the outer end of the casing, so that all portions thereof may lie in close engage ment with the speakers face.

The device, in the present instance, is adapted to be mounted upon the transmitter of the telephone, as clearly shown in Fig. 1 of the drawings, the mouth piece 16 of the transmitter entering the rear end of the casing, and the end of the casing engaging the front wall of the transmitter. The de vice is held in position upon the telephone by means of a hook or bail 17, which is constituted by a pair of side arms 18, each of which is swiveled at 19 to the casing, and a cross piece 20 provided with a handle 21 by means of which it may be manipulated. In the present instance, the side arms 18 are constituted by relat-ivelyslidable members 22 and 23, one of which is provided with a slot 2 1 the wall of which takes about the guide pin 25 and 26 mounted u on the other member, retractile springs 2 being extended between pin 25 and a stud 28 upon the other arm, whereby said members are normally held in a retracted position. Rollers as at 29, are provided upon the cross piece 20 of the bail, so that when the latter is swung over the transmitter said rollers will take against the back thereof, springs 27 yielding to permit a relative sliding movement between the members 22 and 23 which constitute the side members of the bail. hen the bail has been swung to the position shown in Fig. 1 of the drawings, the device will be held securely upon the transmitter of the telephone.

The use of the device which should be obvious from the above description is substantially as follows: The face of the speaker is positioned against the forward end of the casing, which as above described, forms a tight seal thereabout, the exterior of the speakers'lips coming in contact with the mouth piece. This mouth piece being mounted upon the slidable tubular member 7 may be moved inwardly, if necessary, to accommodate the face of the speaker. The mouth piece being yieldably held in contact with the speakers lips forms a tight seal about his mouth, so that any sound emitted by him will be carried directly through the tubular member 7 to the mouth piece of the transmitter. It will be observed that a dead air space is provided not only in the rear portion of the casing, but also in the forward portion thereof, due to the fact that a tight seal is effected at the face and mouth of the speaker upon the outer end of the easing and the mouth piece respectively.

It will accordingly be seen that I have provided a device capable of attaining, among others, all the ends and objects above enumerated in a simple, yet eflicient, manner. The device may be readily positioned upon and removed from the telephone, and when in use affords as much privacy as does a telephone booth, it being impossible for the sound to escape into the apartmentwhere the speaker is located.

As many changes could be made in the above construction and many apparently widely different embodiments of this invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

It is also to be understood that the language used in the following claims is intended to cover all of the generic and specific features of the invention herein described and all statements "of the scope of the invention which, as a matter of language, might be said to fall therebetween.

Having described my invention what I claim as new and desire to secure by Letters Patent is:

1. A telephone attachment comprising, in combination, a casing adapted to be mounted upon the transmitter of a telephone, and a yielding mouth piece located within said casing.

2. A telephone attachment comprising, in combination, a substantially funnel shaped casing adapted to be positioned upon a telephone so as to communicate with the mouth piece of the transmitter thereof, and a mouth piece held within said casing and freely movable with respect thereto, whereby the mouth piece may adjust itself to the mouth of the speaker.

3. A telephone attachment comprising, in combination, a casing adapted to be positioned upon a telephone in communication with the transmitter thereof, a mouth piece within said casing and movably mounted with respect thereto, and spring means for urging said mouth piece away from the transmitter and toward the open end of the casing.

4. A telephone attachment comprising a substantially funnel shaped casing adapted to be positioned upon a telephone so as to communicate with the transmitter thereof, a movable mouth piece located within said casing and formed to fit about the mouth of the speaker, and resilient means for urging said mouth piece to movement in an outward direction.

5. A telephone attachment comprising a casing provided with a sound-deadening space, said casing being adapted to be positioned upon a telephone so as to communicate with the mouth piece thereof, means for holding said casing upon the telephone, and a mouth piece carried within said casing adapted to be engaged by the mouth of the speaker.

6. A telephone attachment comprising a substantially funnel-shaped, double-walled casing adapted to be positioned upon a telephone in communication with the mouth piece of the transmitter thereof, and a tubular member carrying a mouth piece slidably mounted within said casing.

7. A telephone attachment comprising a casing adapted to be positioned upon a telephone so as to communicate with the mouth piece of the transmitter thereof, a tubular member provided with a mouth piece slidably mounted within said casing, one or more springs for urging said tubular member to movement in an outward direction, and means for limiting the extent of such movement.

8. In a telephone attachment, in combination, a casing adapted to be positioned upon a telephone so as to communicate with the mouth piece thereof, the outer end of said casing being formed to fit about the face of the speaker so as to form a soundproof closure, a tubular member carrying a mouth piece slidably mounted in said casing, said mouth piece being formed to fit about the mouth of the speaker, and one or more springs for urging said tubular member to movement in an outward direction whereby said mouth piece is kept in close engagement with the mouth of the speaker.

9. A telephone attachment comprising an open ended casing one end of which is adapted to be positioned upon the transmitter of a telephone, means for clamping said casing upon said transmitter, the opposite end of said casing being formed to fit about the face of the speaker, and a mouth piece located within said casing and adapted to engage about the mouth of the speaker, and spring means for urging said mouth piece to movement in an outward direction.

10. A telephone attachment comprising a casing adapted to be positioned upon the transmitter of a telephone so as to communicate with the mouth piece of the transmitter thereof, and spring controlled means for detachably connecting said casing with the telephone, said casing being provided with a yieldably supported mouth piece disposed in the forward portion thereof.

11. A telephone attachment comprising a casing adapted to be positioned upon the transmitter of a telephone, with one end thereof registering with the mouth piece of said transmitter, said casing having an apertured partition arranged intermediate its ends, a tubular member adapted to slide in the aperture of said partition, spring means for urging said tubular member in an outward direction, and a mouth piece carried by the outer end of said tubular member.

12. A telephone attachment comprising an open ended casing, one end of which is adapted to be connected with the transmitter of a telephone in registry with the mouth piece thereof, the opposite end in said casing being formed to fit about the face of the speaker, said casing having an apertured partition arranged intermediate its ends, a tubular member located within and extending through said aperture and adapted to slide therein, means for preventing a rotation of said tubular member, a mouth piece carried by the outer end of said tubular member, said mouth piece being formed to fit about the mouth of the speaker, spring means engaging said tubular member for urging the same to movement in an outward direction, and means for limiting the movement of said tubular member in such direction and in such position that the mouth piece will normally be disposed near the outer end of said casing.

13. An attachment for telephones comprising a funnel shaped casing adapted to be positioned upon the transmitter of a tele phone so as to communicate with the mouth piece thereof, and a bail swiveled upon said casing and having yielding side arms, said bail being adapted to be swung to occupy a position behind the transmitter whereby the casing will be detachably positioned thereon.

In testimony whereof I afliX my signature, in the presence of two witnesses.

GUSTAVUS ABEEL DURYEE. Vitnesses:

PAUL A. Tour, H. M. SEAMANs.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

